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      1 # $NetBSD: deptgt-main.mk,v 1.4 2022/01/23 21:48:59 rillig Exp $
      2 #
      3 # Tests for the special target .MAIN in dependency declarations, which defines
      4 # the main target.  This main target is built if no target has been specified
      5 # on the command line or via MAKEFLAGS.
      6 
      7 # The first target becomes the main target by default.  It can be overridden
      8 # though.
      9 all: .PHONY
     10 	@echo 'This target is not made.'
     11 
     12 # This target is not the first to be defined, but it lists '.MAIN' as one of
     13 # its sources.  The word '.MAIN' only has a special meaning when it appears as
     14 # a _target_ in a dependency declaration, not as a _source_.  It is thus
     15 # ignored.
     16 depsrc-main: .PHONY .MAIN
     17 	@echo 'This target is not made either.'
     18 
     19 # This target is the first to be marked with '.MAIN', so it replaces the
     20 # previous main target, which was 'all'.
     21 .MAIN: real-main
     22 real-main: .PHONY
     23 	@echo 'This target ${.TARGET} is the one that is made.'
     24 
     25 # This target is marked with '.MAIN' but there already is a main target.  The
     26 # attribute '.MAIN' is thus ignored.
     27 .MAIN: too-late
     28 too-late: .PHONY
     29 	@echo 'This target comes too late, there is already a .MAIN target.'
     30